Inner sleeves are made from heavyweight, non-abrasive 10 pt., acid/lignin free, buffered (pH 8.5) folder stock with a circular identification cut-out, while the exterior cover (sealed on three sides) is made from crystal clear, 3-mil archival polyester. All envelope seams are on the outside, assuring a smooth inner surface.

These sturdy sleeves are designed to be used with our Phonograph Record Storage Boxes. Available in four standard phonograph record sizes. Package of ten albums (10 inner envelopes/10exterior clear covers).